[送诊病例]我家院子的走廊顶上,每年都有一对燕子在那里垒窝,还要孵小燕子。一窝小燕子有三四只,多的有五六只。这时,两只老燕子就忙开了,轮流着捉虫子喂小燕子。当老燕子捉来虫子飞回来的时候,小燕子就争先恐后地张大着嘴巴,“叽叽叽”地叫着等吃的。它们吃饱了,就站在窝边,将尾巴一翘,随地拉大便,很不讲卫生。有时,两只老燕子也“叽叽喳喳”地叫个不停,吵得我都不能做作业,很是烦人…… [Referral cases] At the top of my courtyard corridor, there are a couple of swallows there every year, but also hatching little swallows. There are three or four small swallows, and five or six more. At this time, the two old swallows busy open, take turns to catch insects feeding swallows. When the old swallows catch insects flying back when the swallows scrambling to open their mouths, “Jiji Jiji” shouted waiting to eat. When they are full, they stand on the far side of the nest, toss their tails, pull their stools everywhere, and do not talk about hygiene. Sometimes, two old swallows also “twitter” to stop, noisy I can not do homework, it is annoying ...